In the movie
Terminal, there are a few different scenes in which Tom Hanks' character uses a stag handled camp knife/multitool.
The knife can first be seen when he takes it out of a small box in his luggage. The top of the box is in the bottom left of this screenshot (grey box with a dark blue rectangle and white Cyrillic letters on it; I'll get back to those in a minute). Here are a couple angles of the knife as he turns it in his hands.
They aren't great close-up shots, but you can still see several features on the knife: multiple blades including a corkscrew on the back, stag handles, small round shield and a bail.
Shortly after this, you can see Hanks' character using the bottle opener/flat-head screwdriver to disassemble and airport bench.
Then there's another quick shot of the knife sitting in the bottom of an electrical panel.
Finally, later in the movie, you get a slightly better (although brief) look at the knife.
Now I figured this had to be a real knife that exists out there somewhere. The only tool every opened in the film in the bottle opener/screwdriver, so there's no reason they'd need a prop knife with a dull blade or anything like that (and that would be a complicated prop to make when you could just use a real knife).
I decided to try and search the Cyrillic letters on the box in the first scene, so I set up a Russian keyboard on my phone and started typing them out. Turns out that screenshot was only missing the last letter (and part of the O before it), and Google kindly helped out by finishing it up for me: АРМЕЙСКИЙ НОЖ. Searching that gave me a lot of image results of fixed blade knives, most of which were military fighting-style knives. Ok, at least we're on the right track. I added "in English" to the search. Turns out "АРМЕЙСКИЙ НОЖ" translated into English is "army knife." Well, that's pretty generic, and at this point I'm thinking that the box, unlike the knife, is probably just a prop.
Eventually, though, it dawned on me that I'm pretty sure I've seen this knife before, and a quick search of "Böker camp knife" all but confirmed it. I'm about 98% sure that's what it is. The layout of the blades looks right, the bail, the shield, the placement of the pins, even the shape of the bottle opener; it all seems to check out. Zooming in on the second screenshot above, I feel like you can even (just barely) make out the shape of the tree on the shield.